Conan and the Detective Boys discover Detectives Takagi and Chiba on a stakeout. Believing the children will leave once they realize there's nothing for them to do, they begin explaining the robbery that occurred that morning. The culprit has been identified as unemployed man Fujiki Kazuma, but he hasn't returned home. The police's investigation turned up Fujiki's ex-girlfriend, who he is likely to turn to for help if he's on the run. Though the children are told the culprit has been identified and there's no mystery to solve, something catches Conan's attention...